PARSE 3.0 — program package for three-dimensional transport calculation of neutral and charged particles by the Monte Carlo method

New version of program package PARSE assigned for the transport calculations of neutral and charged particles in three-dimensional geometry by the Monte Carlo method is described in this work. The program package allows to model formation of a neutron source by a beam of accelerated protons of hybrid systems, to calculate the energy spectrums of particles, energy release and other characteristics of the nucleon-nuclear cascade. The multi-group representation of the transport equation in the supposition of continuous slowing down of charged particles and the model of disastrous collisions are used.